note 57699 added to function.imap-open

I'm a ultra noob and I ned this to get a plugin to work. I talked to my webhost and they said I could install it manually to my home directory. How do I add the imap_open function to my php installation? I just create a php file with the example code edited inside? ---- Manual Page -- http://www.php.net/manual/en/function.imap-open.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57699 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57699&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57699&report=yes Search -- http://master.php.net/manage/user-notes.php